Originally Posted by
Teeahmat
Noticed how derailed this became do to the first reply and all of our fixation on it. Ganna try to rectify that. Overall, I feel most fights don't have any serious preference one way or another. There are a few I think Disc or Holy would do better, for one reason or another, though overall Holy is likely to fit in more easily and perform more consistently than disc. In general, Holy's CD's are much more easy to use effectively than discs, and more versatile and probably beneficial as well outside of situations with huge damage bursts. That being said I don't think it's reasonable at all to force a priest to go Disc or Holy. These people probably who would do that need to be slapped across the face by an elephant phallus.
Cooldowns
I feel this is important because CD's are likely something most raids will always worry about having. Furthermore, I feel they can be pivotal in one spec having a higher potential usefulness in a fight than the other.
Pain Suppression VS Guardian Angle
GA gives a cheat death and bonus to healing taken from all sources by the target, or if glyphed, and extreme increase in healing taken, but no cheat death. In it's most basic form, it's versatile in that you can use it in reaction to huge damage increase, the tank dipping low, or proactively in response to predictable damage (such as korgs add phase). Its ability to save a tank, or any player's life for that matter, is very significant. While it's glyphed form definitely needs more careful use since it has no cheat death, it also gains some niche spots such as shroom healing on brackenspore, since it allows one healer to do the output of 3 healers on the target. Even the weakest heals will become very noticeable.
Pain Suppression requires timing and prediction of large damage intakes on the target, most likely the tank, to be useful. While on some encounters, this would obviously be easy (Korg add phase, for example), most of the time, I feel it would be easier to simply use GA. While it doesn't have to be spot on timing, I feel PS is at a definite disadvantage to GA in situations such as tanks dipping low because of failed mechanics, for example. That being said, when used spot on, it probably has the highest potential.
Power Word: Barrier VS Divine Hymn
Divine Hymn heals the entire raid for a fair amount, and provides an buff for 8 seconds each tick increasing healing done by 10%. Granted, the healing buff mechanic makes it somewhat detrimental to use during periods of extreme haste (such as lust, PI, trinkets, ect.) since the longer it takes for the last tick to go off, the longer the raid and other healers benefit from the 10% bonus (thought this obviously shouldn't be prioritized over getting the healing off when needed).
PW:B gives a 25% damage reduction for 10 seconds to anyone in the barrier. I would argue that the DR alone would make this spell able to, in a pinch, work as a tank CD as well so long as the tank with the boss can stay in it. Again, much harder to use effectively than holy's CD, though also probably has a much higher potential. The biggest flaw is that it's uncommon for the entire raid to stack together in a single spot, so that alone is bringing the ceiling down on what it can potential do.
Boss Fights
I would argue Disc would be by far and away superior for Karg, since healing is extremely low for this fight, at least in direct comparison with any other fight in the raid. Probably low enough that absorbs can drop health loss enough that other healers wont have much to do at all. Note, I'm not saying Holy is bad for this fight, merely that Disc probably has higher potential.
I would argue for Holy on Butcher, as I feel the damage going out is to great for PW:S alone to simply soak it all. Holy has a lot better AoE healing capabilities, and prehotting the targets can prove very strong. Of course, when he does his soft enrage Discs PW:B would be very nice, I feel holy would be more consistently useful on the fight. Note, I'm not saying disc is by any means bad for this fight, merely that Holy could have a higher potential.
Tectus has no serious preference.EDITED Upon reading this through after posting, I feel I explained it poorly, and opted to rewrite this part entirely. The conclusion remains the same however. The massive 100 energy AoE is, in my opinion, by far and away the most likely thing to cause lethal damage on raid members. Normally, I would say this makes holy better, but the extreme predictability of it means disc can soak a lot of damage with shielding. And while PW:B can only be on one or the other group, it will still soak a very large amount of damage. Holy ca still pump out serious AoE heals to keep up with that fact, but with the added bonus of probably out performing disc should the priest be RNGayed by being targeted often crystal barrage.
Brackenspore I don't see a preference. Both have single target CD's that can be super effective on the shrooms, so I find no way to argue in favor that way, and the group CD's are both very strong on this fight. In my own experience, this tends to be my own 'weakest' fight in terms of healing done, so perhaps I am missing something.
Twins I also don't see any preference towards. I suppose disc would be better if people are failing to dodge fire (to a very bad extent), though otherwise I can't see one being substantially better than the other.
Korag is dependent upon your group strat. If your guild does a stacking strat, I would go disc. If your guild does not use the stack strat, then holy. Many would probably argue disc soley on the fire dot, but I find it rarely ends up being the big "oh shit" mechanic. Some might also argue disc for pre shielding the shit outa the soaker, but again I would say this is counteracted by disc having NO CD's to help the soaker, where as GA can make a huge difference.
Imperator I don't see a strong lead for either unless people fail mines often, in which case I will argue holy can definitely react much more strongly to that being failed since Disc multi HEALING is very poor (shield wont do anything unless you know someone is going to fail in advance) in comparison to Holy. Realistically though, if you are failing mines a lot, you probably are going to wipe.